Fund Performance: Strong historical returns typically attract more investors, driving up demand and the fund's price, while poor performance can lead to outflows and price declines.

Market Conditions: Broad market trends, such as bull or bear markets, significantly impact FSSWX.US. Positive market sentiment boosts prices, while negative sentiment pressures them.

Interest Rates: Changes in interest rates affect bond yields and the attractiveness of alternative investments, influencing investor demand and subsequently FSSWX.US's price.

Economic Indicators: Economic data releases like inflation, unemployment, and GDP growth impact market sentiment and expectations, indirectly affecting the fund's valuation.

Fund Manager Decisions: The fund manager's investment strategy, stock selection, and asset allocation directly influence the fund's performance and its price.

Investor Sentiment: Overall investor confidence and risk appetite play a crucial role. Positive sentiment can lead to increased investment in FSSWX.US, while fear can trigger outflows.